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Y-bearings with an eccentric locking collar

Y-bearings with an eccentric locking collar are intended primarily for use in applications where the direction of rotation is constant. On one side, the extended inner ring of the bearing has an eccentric step. The step accommodates the locking collar. Turning the locking collar in the direction of rotation locks the collar and bearing onto the shaft. A single grub screw further secures the collar to the shaft. The eccentric collar is zinc-coated for bearings with a metric bore and black oxidized for bearings with an inch bore. There are two standard series available from SKF.

Y-bearings in the YET 2 series have an inner ring extended on one side (fig. 1).

Y-bearings in the YEL 2 series have an inner ring extended on both sides (fig. 2). This reduces the extent to which the inner ring can tilt on the shaft, which enables the bearing to run more smoothly.

Bearings in both the YET2 and YEL 2 series are fitted with a rugged standard seal (→ Standard seals). Bearings in the YEL 2 series are fitted with an additional flinger on both sides. Flinger options are:

Y-bearings in the YET 2 and YEL 2 series have two lubrication holes in the outer ring as standard, one on each side, positioned 120° apart. Bearings without lubrication holes can be supplied on request (designation suffix W).

SKF Y-bearings with an eccentric locking collar are available for metric shafts from 15 to 60 mm and for inch shafts from 1/2 to 2 7/16 inches.

For demanding operating conditions that occur in agricultural applications like combines and balers, harvesters and disk harrows, SKF has designed Y-bearings in the YELAG 2 series. These bearings are fitted with a patented 5-lip seal and do not have any lubrication holes in the outer ring. SKF YELAG 2 series bearings are available for metric shafts from 20 to 50 mm and for inch shafts from 1 to 1 15/16 inches.